本文用躺滴法研究了 Triton X-100和 Triton X-305在油/水界面上的吸附膜,油相是正庚烷和煤油,水相是不加和加盐(NaCl 和 NaNO_8)的溶液。结果表明,在油/水界面的分子面积比在空气/水界面上的大,水相中加入盐的效应是使分子面积减小。根据我们前文提出的气/液界面分子模型,可以合理地解释所得的实验结果。 In this paper, the adsorption films of Triton X-100 and Triton X-305 on the oil / water interface were studied by the method of droplet dropping. The oil phase was n-heptane and kerosene, and the aqueous phase was the solution without salt and addition of salt (NaCl and NaNO_8). The results show that the effect of adding salt to the aqueous phase is to reduce the molecular area at a larger molecular area ratio at the oil / water interface than at the air / water interface. Based on the gas / liquid interface molecular model we presented earlier, the experimental results obtained can be reasonably explained.